Brake-staff lock



P. WEYDERT BRAKE STAFF OCK Filed May .1 925 mam Patented Aug. 17, 1926.

STATE PETERWEYDERT; onEsoAnABA, MICHIGAN.

- BRAKE-STAFF LOCK.

Application filed May 1, 1925. Serial N0. 27,322.

My presentinvention has:reference to anoperating" staff for the brake drums of flat cars, such as areemployed' in hauling logs and the like.

My improvement is to be considered a safety device for operating brake drums, as he staff thereof drops through the drum when the brake is'not to beoperated, so that the said staff offers' no obstructions which are liable to tri'ptrainmen with fatal results and also wherein, when the staff is brought to operative position, noinjury will be inflicted to theoperator.

A further object is the provision of a brake mechanism for open cars which includes a brake drum having a brake staff movable" therethrough and provided with means at its lower end' for engaging means in thebottom of the drum so that when the staff is turned to one position it will be locked on the drum and when'slightly elevated and turned to a second position-will drop through the drum, the upper portion of the staff being provided with the usual operating wheel which rests on the top of the device when the device is in operative position.

Vith the above broadly stated objects in view, and others which will appear as the nature of the invention is better understood, reference is to be had to the drawings which accompany and which form part of this application.

In the drawings Figure 1 is an elevation of the improvement, the brake staff being in operative position.

Figure 2 is a sectional view through the drum with the staff locked thereto, as shown in Figure 1.

Figure 3 is a similar sectional view but. showing the staff in lowered inoperative position.

Figure a is a central vertical longitudinal sectional View through the drum with the staff removed.

Figure 5 is a sectional 5-5 of' Figure l.

Figure 6 is a view of the lower end of the stafl'.

As the brakes of open bodied cars are of the well known type I have not deemed it necessary to illustrate the same nor have I illustrated the chain connection between the drum and the brake mechanism.

Referring now to the drawings in detail view on the line the numeral 1 designates the drum. associated with the brake mechanism of a car. The drum is suitably mounted for turning but held, in the usual manner from longitudinal movement. The drum, from the lower end thereof, has its bore widened and provided with spaced longitudinal grooves 2 and 3, which have lower angle portions which communicate. These last mentioned portions are indicated for distinction by the numerals 4. The groove 3 is extended the entire length of the widened portion of the bore of the drum, but the said widened portion is formed with transverse. passages 5' with which the grooves 2 communicate. The passages 5 have inner straight walls 6, andthelower walls 7 provided by the said passagesare formed with downwardly directed notches 8, the walls 6 providing one ofthe sidewalls of the said notches.

ceived through the bore of the drum 1 there is a brake staff 9. A' hand wheel 10 is screwed on the outer or upper end of the brake staff. The wheel 10 will rest on the top of the drum when the staff is lowered to non-operating position. The staff 9 has its lower end formed with laterally extending oppositely arranged bits 11, and these bits are of a size to be snugly received through the groove extensions land to enter the grooves 2 and 3. A quarter turn of the drop staff when the bits 11 thereof are disposed in a line with the passages 7 will bring the said bits in a line with the notches 8. The arrangement of the bits is determined by the contact of the bits with the walls 6. The staff is then permitted to drop so that its bits 11 are brought into the notches 8. The staff is now locked to the drum and the turning of the staff will impart a like movement to the drum. After the brake is operated the staff is raised in the drum to bring its bits 11 opposite the passages 5. The upward movement of the staff, through the drum, is limited by the contact of the bits with the upper wall 12 of the passages, the same also providing the terminal wall of the grooves 3. The staff is then turned so that its bits 11 will contact with the opposite side walls provided by the grooves 3, which brings the bits in a position to be received through the grooves 52 and 3. A release of the head will permit the shaft to drop by gravity through the drum 1 and the downward movement of the staff is limited, as above stated, by the contact of its wheel 1-0 with the upper end of the drum 1. It is, of course, to be understood thatthe wheel 10 is removed from the staff 9 before the said staff is passed through the bottom of the drum. The wheel 10, when secured on the staff, limits the downward movement of the staff through the drum and the bits 11, when brought into contact with the walls 12, of the passages 5, will limit the outward movement ,of the staff through the drum. Thus it will be noted that the staff is at all times associated with the drum.

The simplicity of my in'iorovement, the easy manner in which the same is operated and the life saving propensity thereof will be understood and fully appreciated by those skilled in the art to which this invention relates so that a further detailed description the eof' is not believed necessary.

Having described the invention, 1 claim:

1. In a device for the purpose set forth, a revoluble brake drum, which is h ld from longitudinal movement, a wheel operated staff designed after being inserted in thedrum to normally drop by gravity through the drum to bring the wheel thereof to rest on the top of the drum, said staff having its outer end formed with bits, said drum hav ing its lower end provided with grooves to receive the bits 7 of the staff therethrough when the staff is drawn outwardly through the drum, said drum having transverse passages communicating with the respective grooves and terminating in notches in which the bits of the staff are-received when the said staff is turned to bring its said bit-s through the passages and the staff is permitted to drop in the drum to lock the staff to the drum, and to sustain the wheel end of the staff elevated above said drum.

2. A revoluble brake drum which is held from longitudinal movement and a staff staff having passages, having oppositely directed transverse passages communicating with the grooves and the drum being notched longitudinally in aline with the inner and lower walls providedby the passages and the brake staff having oppositely directed bits thereon designed to be received in the grooves, when the staff is drawn outwardly through the drum, to be limited in such movement by the contact of the bits with the upper walls provided by the passages and to be guided into the notches when the staff'is turned to'bring the bits into con tact with the inner walls of the passages, as and for the purpose set forth.

In testimony whereof I affix my'signature.

PETER WEYDERT. 

